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39 lines
1.0 KiB
Vue
39 lines
1.0 KiB
Vue
<template>
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<el-checkbox
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v-model="checkAll"
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:indeterminate="isIndeterminate"
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@change="handleCheckAllChange"
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>
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Check all
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</el-checkbox>
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<el-checkbox-group
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v-model="checkedCities"
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@change="handleCheckedCitiesChange"
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>
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<el-checkbox v-for="city in cities" :key="city" :label="city" :value="city">
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{{ city }}
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</el-checkbox>
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</el-checkbox-group>
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</template>
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<script lang="ts" setup>
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import { ref } from 'vue'
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import type { CheckboxValueType } from 'element-plus'
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const checkAll = ref(false)
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const isIndeterminate = ref(true)
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const checkedCities = ref(['Shanghai', 'Beijing'])
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const cities = ['Shanghai', 'Beijing', 'Guangzhou', 'Shenzhen']
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const handleCheckAllChange = (val: CheckboxValueType) => {
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checkedCities.value = val ? cities : []
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isIndeterminate.value = false
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}
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const handleCheckedCitiesChange = (value: CheckboxValueType[]) => {
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const checkedCount = value.length
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checkAll.value = checkedCount === cities.length
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isIndeterminate.value = checkedCount > 0 && checkedCount < cities.length
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}
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</script>
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